OmniOutliner Markdown Plugin

I have been experimenting with an XSLT that transforms OPML into Markdown
text. It works fairly well, but there are issues that arise from the fact that
OPML is poorly designed. In addition, it would be nice to be able to export
straight to Markdown from OmniOutliner, rather than saving an OPML, and then
running xsltproc to convert.

So I created an Export plugin for OmniOutliner that allows you to save your outline as Markdown formatted text.